Even though it's a good idea to be grateful for your besties 365 days of the year, it's nice to have a reason to celebrate them today with a little extra spark.
And, if nothing else, it's a perfect excuse to Instagram a collage of you two looking hot AF.
In all seriousness, best friends are vital.
Our BFFs are there for us through the highest of the highs and the lowest of the lows.
They've seen it all, and then some.
With that in mind, here are seven crucial reasons to take a moment out of your day and say "thank you" to the girl who has always been by your side:
1. Your bestie always gets your FOMO or FOGO.
Let's face it: There are some days when you feel like you absolutely need to go out.
Your best friend is always willing to rally; even if she's dead tired, she'll be ready to serve as your partner in crime.
On the flip side, you two always seem to be in sync when you'd just rather put on a pair of sweats and rock the messy topknot.
She's feeling that vibe as well, and there's no one you'd rather binge watch Netflix with than her.
2. There's no such thing as TMI.
Your BFF is the one person in the world you can literally say or ask anything to. No topic is off limits; she has more information on your bodily functions than your doctor does. Yes, you even talk about poop — on the reg.
When you're worried about a medical issue, especially one related to your lady parts, you immediately text her, "Hey, do you think this is normal?"
You know she'll give it to you straight.
3. She is brutally honest with you.
Sometimes, you just need someone to be candid with you, even if it's not what you want to hear. There's nothing worse than shopping with a friend who "loves" everything you try on in the dressing room. Let's be honest: We all don't look amazing in everything.
On occasion, you just need someone to tell you an outfit isn't flattering. Your best friend is that person; she'll be blunt with you and she knows you'll appreciate her honesty. She'll make sure you don't purchase anything heinous that might make your butt look terrible.
She'll also give you her honest thoughts on the people you date, and she'll speak up when she worries you're making a mistake.
4. Your BFF is the recipient of your ugliest Snapchats.
I'm talking double chins, crossed eyes and the grossest expressions imaginable.
We're all guilty of sitting at our desks at work, looking around quickly to make sure no one is watching, then flashing the most horrifying face we can think of.
We giggle to ourselves, splatter some finger art, or add an emoji and hit "send" to our bestie.
5. All of those post-breakup phone calls don't go unanswered.
Some of us might need to send a card for this one.
No one knows how to coach a girl through a breakup like someone who is in the best friend role. Your bestie probably turned into Wonder Woman, making herself available 24/7, listening to your crying phone calls, indulging in clichés like ice cream and bad movies.
What's even better is she knows when it was time for you to pull yourself together, and she's not afraid to say it.
6. You don't ever have to worry about competing for each other's attention.
This is key. Sometimes, friends get into fights when someone starts spending a lot of time with a significant other. But, with your best friend, it's almost like there's an unspoken agreement and understanding.
The beginning of a relationship is always exciting, and there's always a huge desire to spend a lot of time with that person. You don't get on your BFF's case when she spends a lot of time with her boyfriend or girlfriend, and vice versa.
You know you'll see each other eventually, and you can't wait to recap all of the juicy date details together.
7. You don't need to live in the same city for your friendship to be top-notch.
It's inevitable: Groups of friends will split up across the country after college. Various jobs might put you and your bestie on opposite coasts.
Luckily, you don't need to see each other constantly for your friendship to thrive. Sometimes you go months without seeing each others faces IRL, but it doesn't matter.
Your bond is solid, and no amount of time or space can put a dent in it.